2.2 Method

Figure 2 shows that the CNC consists of the machine, electric motors, pneumatic or hydraulic power units, control panel and software.

A 4-Axis CNC (Megatron) machine designed for the natural stone industry in Afyon Kocatepe University Natural Stone Processing Laboratory was used for the tests. The technical features of the machine are given in Table 3.

Processability tests were performed on natural rocks according to the dp and Va cutting parameters by using CNC machine. Alpha CAM drawing program was used to determine the cutting parameters of natural rocks. As shown in Figure 3, 120 25 mm in size 18 rectangular samples were produced using a 3D modeling and simulation program for the processability tests.

A power meter, also known as load meter, built in the CNC machine was used in the processability tests. This testing tool consists of a measurement unit, a load cell, a controller unit and Defne Lab Soft program (Figure 4).

#### Figure 1.

Image of the end mill cutting edge tool.


#### Table 2.

Technical properties of end-mill cutting edge tool.
